diff --git a/asm/mineralWaterSource.s b/asm/mineralWaterSource.s
deleted file mode 100644
index 983ee648..00000000
--- a/asm/mineralWaterSource.s
+++ /dev/null
@@ -1,72 +0,0 @@
-	.include "asm/macros.inc"
-
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-	thumb_func_start MineralWaterSource
-MineralWaterSource: @ 0x08097370
-	push {lr}
-	ldr r2, _08097384 @ =gUnk_08123298
-	ldrb r1, [r0, #0xc]
-	lsls r1, r1, #2
-	adds r1, r1, r2
-	ldr r1, [r1]
-	bl _call_via_r1
-	pop {pc}
-	.align 2, 0
-_08097384: .4byte gUnk_08123298
-
-	thumb_func_start sub_08097388
-sub_08097388: @ 0x08097388
-	push {r4, lr}
-	adds r4, r0, #0
-	bl sub_0806FBD8
-	cmp r0, #0
-	beq _080973D4
-	ldrb r0, [r4, #0xa]
-	lsls r0, r0, #2
-	ldr r1, _080973D8 @ =gUnk_081232A0
-	adds r0, r0, r1
-	ldrb r1, [r0]
-	strb r1, [r4, #0xb]
-	ldrb r2, [r0, #3]
-	adds r1, r4, #0
-	adds r1, #0x40
-	strb r2, [r1]
-	ldr r2, [r4, #0x48]
-	ldrb r1, [r0, #1]
-	strb r1, [r2, #6]
-	ldr r1, [r4, #0x48]
-	ldrb r0, [r0, #2]
-	strb r0, [r1, #7]
-	ldrb r1, [r4, #0x10]
-	movs r0, #0x80
-	orrs r0, r1
-	strb r0, [r4, #0x10]
-	adds r1, r4, #0
-	adds r1, #0x3c
-	movs r0, #7
-	strb r0, [r1]
-	adds r1, #3
-	movs r0, #0x91
-	strb r0, [r1]
-	subs r1, #4
-	movs r0, #2
-	strb r0, [r1]
-	movs r0, #1
-	strb r0, [r4, #0xc]
-_080973D4:
-	pop {r4, pc}
-	.align 2, 0
-_080973D8: .4byte gUnk_081232A0
-
-	thumb_func_start sub_080973DC
-sub_080973DC: @ 0x080973DC
-	adds r0, #0x41
-	movs r1, #0
-	strb r1, [r0]
-	bx lr
diff --git a/data/data_902.s b/data/data_902.s
index f72f7efa..195092dc 100644
--- a/data/data_902.s
+++ b/data/data_902.s
@@ -1828,10 +1828,10 @@ gUnk_08123274:: @ 08123274
 gUnk_0812327C:: @ 0812327C
 	.incbin "baserom.gba", 0x12327C, 0x000001C
 
-gUnk_08123298:: @ 08123298
+MineralWaterSourceActionFuncs:: @ 08123298
 	.incbin "baserom.gba", 0x123298, 0x0000008
 
-gUnk_081232A0:: @ 081232A0
+MineralWaterSourceParameters:: @ 081232A0
 	.incbin "baserom.gba", 0x1232A0, 0x0000004
 
 gUnk_081232A4:: @ 081232A4
diff --git a/include/entity.h b/include/entity.h
index 9e286c40..d9a60d30 100644
--- a/include/entity.h
+++ b/include/entity.h
@@ -17,6 +17,13 @@ typedef struct {
     u8 parameter;
 } EntityType;
 
+typedef struct {
+    u8 unknown[6];
+    u8 field_0x6;
+    u8 field_0x7;
+    u8 unknown2[4];
+} BoundingBox;
+
 union SplitWord {
     s32 WORD;
     struct {
@@ -103,7 +110,7 @@ typedef struct Entity {
     u8 field_0x44;
     u8 currentHealth;
     s16 field_0x46;
-    u32* boundingBox;
+    BoundingBox* boundingBox;
     u8 field_0x4c;
     u8 field_0x4d;
     u8 field_0x4e;
diff --git a/linker.ld b/linker.ld
index b729b21d..2b5178a4 100644
--- a/linker.ld
+++ b/linker.ld
@@ -704,7 +704,7 @@ SECTIONS {
 		asm/crenalBeanSprout.o(.text);
 		asm/minecartDoor.o(.text);
 		asm/objectOnPillar.o(.text);
-		asm/mineralWaterSource.o(.text);
+		src/mineralWaterSource.o(.text);
 		asm/minishSizedArchway.o(.text);
 		asm/object70.o(.text);
 		asm/pushableGrave.o(.text);
diff --git a/src/heartContainer.c b/src/heartContainer.c
index d595c784..643b87dd 100644
--- a/src/heartContainer.c
+++ b/src/heartContainer.c
@@ -7,7 +7,7 @@ extern void sub_0808E714(Entity*);
 
 extern void (*const gUnk_08121C48[])(Entity*);
 
-extern u32 gUnk_08121C58;
+extern BoundingBox gUnk_08121C58;
 
 void HeartContainer(Entity* this) {
     gUnk_08121C48[this->action](this);
diff --git a/src/mineralWaterSource.c b/src/mineralWaterSource.c
new file mode 100644
index 00000000..c874530b
--- /dev/null
+++ b/src/mineralWaterSource.c
@@ -0,0 +1,47 @@
+#include "global.h"
+#include "entity.h"
+
+extern void (*MineralWaterSourceActionFuncs[])(Entity *);
+
+typedef struct {
+    u8 field_0x00;
+    u8 field_0x01;
+    u8 field_0x02;
+    u8 field_0x03;
+} UnkStruct_MineralWater;
+
+extern UnkStruct_MineralWater MineralWaterSourceParameters[];
+
+extern bool32 sub_0806FBD8(Entity *);
+
+void MineralWaterSource(Entity *this) {
+    MineralWaterSourceActionFuncs[this->action](this);
+}
+
+void MineralWaterSource_Init(Entity *this) {
+    UnkStruct_MineralWater *unknownParameters;
+
+    if (!sub_0806FBD8(this)) {
+        return;
+    }
+
+    unknownParameters = &MineralWaterSourceParameters[this->entityType.form];
+
+    this->entityType.parameter = unknownParameters->field_0x00;
+    this->field_0x40 = unknownParameters->field_0x03;
+
+    this->boundingBox->field_0x6 = unknownParameters->field_0x01;
+    this->boundingBox->field_0x7 = unknownParameters->field_0x02;
+
+    this->flags |= 0x80;
+
+    this->field_0x3c = 7;
+    this->damageType = 145;
+    this->flags2 = 2;
+
+    this->action = 1;
+}
+
+void sub_080973DC(Entity *this) {
+    this->bitfield = 0;
+}
\ No newline at end of file
diff --git a/src/object1A.c b/src/object1A.c
index 6a3ce51c..2cb9d9ff 100644
--- a/src/object1A.c
+++ b/src/object1A.c
@@ -11,7 +11,7 @@ extern u32 Random(void);
 
 extern void (*gUnk_081206C4[99])(Entity*);
 
-extern u32 gUnk_080FD1A8;
+extern BoundingBox gUnk_080FD1A8;
 
 // Main
 void Object1A(Entity* ent) {